#!/usr/bin/bash

a=10
b=20

if [ $a != $b ]
then
	echo "a != b"
else
	echo "a == b"
fi

if [ $a -lt 100 -a $b -gt 15 ]
then
	echo "a < 100 and b > 15 true"
else
	echo "false"
fi

if [ $a -lt 100 -o $b -gt 100 ]
then 
	echo "a < 100 or b > 100 true"
else
	echo "false"
fi

if [ $a -lt 5 -o $b -gt 100 ]
then
	echo "a < 5 and b > 100"
else
	echo "false"
fi


